Book-indicator



(\NQ Model.)

M. G. BAILEY & HIT.- WELGH.

I BOOK INDICATOR.

v No. 480,649. Patented Aug. 9, 1892.

' UNI ED STATES "ATENT tines.

)IAHLON G. BAILEY AND HENRY T. XVELCI LOF SAN J OSE, ASSIGNORS TO JAMES G.'SPAULDING, OF SAN FRANCISCO, CALIFORNIA.

BOOK-INDICATOR.

SPECIFICATION forming part of Letters Patent No. 486,649, dated August 9, 1892.

Application filed April 6, 1892. Serial No. 428,053- No model.)

To all whom it may concern:

Be it known that we, MAHLON G. BAILEY and HENRY T. WELCH, citizens of the United States, residing at San 'Jos, Santa Clara county, State of California,'have invented an Improvement in Book-Indicators; and we hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to that class of indicators or marks for books in which an indieating-strip lies transversely upon and is mow able vertically over the page of the book to indicate the lines thereof.

Our invention consists of a book-mark or line-indicator of this class in which the indicating-strip is made of a thin flexible or pliant sheet of celluloid. w

, It also consists in a connection or bearing the full width of the indicating strip, whereby said strip is mounted and slides upon its support.

It also consists, in connection with the sliding bearing of the indicating-strip, of a stiffeningsleeve, upon which said bearing mounted and which is itself mounted and adaptedto slide upon the support.

'lheseimprovements, together with details of construction and arrangement, will be hereinafter fully described, and specifically pointed out in the claims.

The objects of' our invention are, first, to provide in this class of book-indicators an indicating-strip of such a character that by reason of its pliancy and flexibility it will lie perfectly upon the surface of the page of the book; secondly, to hold the indicating-strip perfectly to the support upon which it is mounted by means of such a connection as will enable it to slide up and down upon said support easily without cramping or binding and with precision, and, thirdly, to insure by means of the stiffening-sleeve the extension of the indicator-strip from its support at a right angle under all circumstances.

Referring to the accompanying drawings for a more complete explanation of our invention, Figure l is a view of our book-indicator. Fig. 2 is a view showing its application to a book.

A is the indicating-strip. This is a flat thinsheet of celluloid of a flexible and pliant nature, whereby the strip remains always smooth and will lie upon the page B of the book D in perfect contact therewith. It is durable and may be made as ornamental in appearance as desired. Its surface may be ornamented or printed to suit the taste, or it may be so finished as will adapt it to be written upon, so that it may be used for the purpose of making memoranda during itsuse to indicate the lines, thus rendering it particularly adapted for book-keepers and accountants use.

C isthesupportof the book-indicator. This may consist of any suitable cord or bar, preferably an elastic cord, adapting it to be extended, so that it may fit different sizes of books. This cord is provided at each end with a hook or other fastening c, which engages the leaves of the book at each end, thus holding the cord or support in the fold or bend of the book-back. Theindicating-stuiphasfastened to it at its inner end a tubular bearing a, which, it will be observed, is made of a length equal to the full width of said indicatings trip. This hearing may be mounted directly upon the cord or support 0, whereby the indicating-strip A will be adapted to slide up and down on said support, traveling vertically over the surface of the page of the book. This bearing a,being of the fnllwidth of the indicating-strip, furnishes a perfectly strong and rigid connection with the cord or support 0, which enables the indicating-strip to slide up and down thereon with precision and Without any tendency to binding or cramping, as would be the case it said bearipg were located at the corner of the strip, or if it were anything less than the full width of said strip. It also causes the indicating-strip to extend from the support or string at a perfect right angle. To insure this latter effect and to ren der the cord or support C more rigid and less yielding under the movement of the indicatingstrip, the bearing a, instead of being mounted directly upon the cord or support C, maybe mounted and adapted to slide up and down upon a sleeve E, made longer than the bearing a and fitted upon the elastic string or cord. \Vhen the latter is not extended, its diameter is suificient to snugly fill the isleeve E, whereby the parts remain normally in any position to which they are set; but when the cord or support is extended and its diameter thereby decreased the sleeve E can slide readily upon said support or cord. The ends of the sleeve E may be outwardly flanged or pro- 5 vided with burrs e, forming stops, whereby the sliding bearing a is.confined upon it and is adapted to pick it up and carry it along up and down over the entire lengthof the book, so that said bearinga; is always upon the sleeve E, which, no matter in what positionthe indicating-strip may be, will serve the purpose oi. holding said strip rigidly at right angles and also of stifiening the cord or support 0. l

This indicator, while useful for any book,- is particularly intended for use with the large blank or account books of book-keepera-Government clerks, and others whose duties "re-- quire the entry of items in large books.

When the strip A is made to write vupon, accounts and amounts can be cast up with ease directly below the entries being consuited. The strip A being moved up and down over the surface of the page of the book will accurately indicate any line thereon desired; Having thus described ourinvention,what we claim as new, and desire to secure by Letters Patent, isp p 1. A book-indicator consisting of a-eord or 0 support to be secured to and lie in the-back of a book and an indicating-strip of non-absorbent material having a. bearing at its inner end y of equal width with the strip and adapted to havea close sliding connection with the cord or support, whereby the strip maybe truly aligned .with the lines of the book, substantially as herein described.

2. A book-indicator consisting of a cord or support to be secured to the ends of the book 0 and to lie in the back or bend thereof, an in-,

dictating-strip to extend transverselylover-the surface of the book-page, a sleeve mounted 1 and adapted to slide on the cord or support, and-a bearing secured to the inner end of the.

nected with the inner end of said strip and mounted and sliding upon the sleeve between its stops, whereby by contact therewith said bearing'and' sleeve move together, substantially as herein described.

4. A book-indicator consisting of acord or support to lie in the backer bend of the book andtprovided withendfasteningsfor securing it to theiends of the book,-a-sleevehaving end stops and mountedand slidingzupon saidcord orsirpport, anindicating-strip to extend trans- I versely over the ,surface of the book-pageand made of a flexible orpliant sheet-of celluloid, and a bearing secured to the'inncr end-of the indicatingstrip and having a length equallto the full width ofsaid strip, said hearing being mounted and adapted to slide onthe sleeve-between its stops and to carry it with it, substantially as herein described.

5. In a shifting line-indicator fonbooks, having an elastic guide-cord provided with :a slidable sleeve or-cover and means for attaching said cord to a book, a pliable sheet of non absorbent material having a-clasp slidable on said sleeveand'limited'in its movementbythe latter, substantially as herein described.

In witness whereof we have hereunto set outhands.

MAHLON c. BAILEY. HENRY T. WELCH.

. Witnesses:

S. H. NOURS-E, J No. L. BOQNE. 

